I am at the phase of installation of TAILS 3.0 where I need to clone TAILS onto my second USB. when I click the install by cloning button the window closes and no menu comes up at all. I am hoping that someone knows a fix for this.
Try restarting with the intermediary but this time, set an Administrator password. Now when booted fully into tails, launch the Terminal and type 'sudo tails-installer-launcher'. It will ask for your Administrator password that you set on start-up. This will provide the Tails installer the proper elevated privileges to install by cloning.